Picture or continuous essay-which is safer to write in exam?

Anyone has tips on this ? any good model compo reference book to recommend ?i know im quite late only to intervene during his psle year but llate is better than never ......Thank u all in advance for any advice.

There's no 'safe' choice. It really depends very much on the student's comfort level.Choice of question also depends on the topic. If the student is confident and has ready ideas to write, it will make more sense to pick that question.